ISHS Acta Horticulturae 776: XI International Asparagus Symposium
EFFECTS OF MICRO IRRIGATION AND CULTIVAR CHOICE ON HEALTH STATUS OF ASPARAGUS IN CENTRAL POLAND CONDITIONS |
| Authors: | D. Panka, R. Rolbiecki |
| Keywords: | Asparagus officinalis, micro irrigation, fungal diseases, cultivars |
| Abstract:
The susceptibility of 24 different asparagus cultivars to infection by Fusarium root and stem rot, asparagus rust (Puccinia asparagi), Stemphylium leaf spot and grey mould, and the effect of surface drip irrigation on infection levels was studied. The investigation was carried out on a seed-plot and in the first two years of cultivation. The field experiment was established on a sandy soil in central Poland. The asparagus plants were grown for white spear production. All diseases occurring on the plants during the vegetation period were evaluated at summer time and at the end of the vegetation period. Asparagus seedlings were sporadically infected. Relatively high infection with pathogens was observed in 2004 (second year of cultivation). 'Ravel', 'Ramada', 'Rambo' and 'Rally' were the most susceptible for infection with asparagus rust and Stemphylium leaf spot. The weakest infection was observed on cultivars: 'Rapsody', 'Plaverd' and 'Apollo'. Irrigated plots showed significantly higher rust infection. Opposite tendency occurred in case of Stemphylium leaf spot. The most susceptible to grey mould were cultivars 'Jersey Giant', 'Jersey Knight', 'Jersey Supreme', 'Jersey King' and 'Jersey Deluxe', and the most tolerant were 'Grolim' and 'Backlim'. There was no irrigation effect on grey mould occurrence. Significant higher number of plants with Fusarium rot symptoms were found in non-irrigated plots. | |
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